32144421 has 4 divisors (see below), whose sum is σ = 42859232. Its totient is φ = 21429612.

The previous prime is 32144419. The next prime is 32144443. The reversal of 32144421 is 12444123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12444123 = 3 ⋅4148041.

It is not a de Polignac number, because 32144421 - 2¹ = 32144419 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32144401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5357401 + ... + 5357406.

It is an arithmetic number, because the mean of its divisors is an integer number (10714808).

Almost surely, 2^32144421 is an apocalyptic number.

It is an amenable number.

32144421 is a deficient number, since it is larger than the sum of its proper divisors (10714811).

32144421 is a wasteful number, since it uses less digits than its factorization.

32144421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10714810.

The product of its digits is 768, while the sum is 21.

The square root of 32144421 is about 5669.6050126971. The cubic root of 32144421 is about 317.9571062749.

Adding to 32144421 its reverse (12444123), we get a palindrome (44588544).

It can be divided in two parts, 32 and 144421, that added together give a triangular number (144453 = T₅₃₇).

The spelling of 32144421 in words is "thirty-two million, one hundred forty-four thousand, four hundred twenty-one".